Blower Motor Intermittent Starts then dies away!

[16sam]

Hi, got a problem perhaps not fully covered previously.

The heater blower works on all settings/speeds then dies away to nothing. It only works when the car is started and once it's stopped working it doesn't operate again until the ignition has been off for a while. It can work okay on setting 2 if untouched but once it gets altered it dies. 

Checked fuses and all ok, if it was the resistor it would still work on 4 always?

The fan is making a noise but checked for debris and nothing obvious. 

Any ideas folks?

Thx, SAM

[Breezy_Pete]

What year car, how many miles done?  Wondering if the fan motor brushes are worn so short that they're only just making contact.

[16sam]

2005 VRS WITH 102K MILES. Could be that but would that cause the whirring sound?

[16sam]

Going to get a new fan motor, hopefully that'll sort it. £100 wasted if not but from the sheer number of posts either the fan or resistor is likely to go sooner or later!

[16sam]

Quick update. New motor sorted it. The old one worked fine turned upside down but intermittently the right way up so your diagnosis probably spot on. On to next problem now!

Edited 31 August, 2017 by 16sam
added.

[Breezy_Pete]

Thanks for letting us know the outcome.

 

[16sam]

Thanks for the suggestion, much appreciated.